How To Prove The Quadratic Formula By Completing The Square

This algebra video tutorial explains how to prove the quadratic formula by completing square.

Solving Quadratic Equations By Factoring:

How To Factor Difficult Quadratic Equations:

Solving QE By Completing The Square:

Solving Equations In Quadratic Form:

Sum and Products - Quadratic Equations:

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How To Calculate The Discriminant:

Standard Form to Vertex Form:

Graphing Quadratic Functions:

How To Find The Axis of Symmetry:

Graphing Quadratic Functions - Vertex Form:

Graphing QF in Standard Form:

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Writing Quadratic Equations:

Maximum and Minimum Word Problems:

Systems of Quadratic Equations:

Systems of Nonlinear Equations:

Quadratic Inequalities:

Quadratic Equations - Test Review:

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Final Exams and Video Playlists:

Full-Length Videos and Worksheets:

[PikaChuuuuuuuuuuuuuu]

I had a sudden urge to see a derivation of the quadratic formula at 12 am and I was not disappointed

[KwaneleMkhizeZH]

You make me want to learn things just for the fun of it.

[pkmath]

Deriving quadratic formula has always been fun when I was in high school. It is good that you made a video for this. Nice work and smooth transitions!

[bigbluebuttonman]

I don't know if this was ever shown to us in my algebra class, but this is a far simpler derivation of the quadratic formula than was shown in my workbook that I'm using for review, which was just too long and convoluted for my tastes.

This is much simpler and more straightforward.

[nightsky]

The video is detailed and brilliant explanation, great job and honestly you deserve way more respect, credit and more money for your work.

[dammeh]

This makes me remember my grade 9 math classes. We also encountered this so thank you for the nostalgia

[Aleksander_garcia]

Omg you make me love mathematics when you upload this type of videos, thanks a lot !

[m.ksent]

u are the best teacher have learnt and understood it very clear thanks alot

[Jimfrenchde]

I learned this in Algebra 1, Thank you for the lucid review, .

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[backyardagric]

Simple and straight to the point. I would like to know the app you are using for the blackboard. Thank you

[ScrotN]

I love this so much. This equation is too true

[aliyahnarciso]

So im not learning this lesson rn but i just wanted to say that you have helped me so much throughout my whole school life, and if it werent for you and ur channel i would've failed every math test/quiz/exam

Basically...


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[QariQuibaos]

You’ve just saved me. I have done this last when I was in secondary school.

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[jennifergutierrez]

Where was this video when I needed it 🙄😭

[abdulahadraza]

Great video helped me a lot for school

[CRMangalagowri]

Tq so much to the channel 🎉 well explained 👏 😊

[naomimorris]

Very nice thank you so much I have learned already

[rosieprichard]

thank you so much for this video <3